How to Fix Cannot View PDF Files After Installing Windows 8.1
Question details
The user is unable to open or view PDF files on a newly installed Windows 8.1 system and needs to access their active Adobe Export PDF subscription.

- Product
- Adobe Acrobat Reader
- Device & OS
- Windows 8.1
- Scenario
- Trying to view standard PDF documents and utilize PDF exporting features after upgrading or reinstalling the Windows 8.1 operating system.
- Observed behavior
- PDF files fail to open because the system lacks a designated default PDF reader, preventing the user from viewing documents or using their subscription.
Make sure your Windows 8.1 system is connected to the internet and have your Adobe ID credentials ready to access your subscription.
Download and Install Adobe Acrobat Reader
Installing the official, free desktop version of Adobe Acrobat Reader will restore your ability to open and view PDF files locally on Windows 8.1.
Windows 8.1 requires a dedicated application to handle PDF files efficiently. The free Adobe Acrobat Reader provides full compatibility with standard PDFs and integrates with your Adobe ID.
Open your web browser and navigate to the official Adobe Acrobat Reader download page.
Click the download button to get the installer for the desktop version of Adobe Acrobat Reader. Ensure you uncheck any optional third-party software offers if you do not want them.
Locate the downloaded installation file in your Downloads folder, double-click it, and follow the on-screen instructions to complete the installation.
Open Acrobat Reader. When prompted to make it your default PDF application, click 'Yes' so that all future PDF files open automatically in this program.

Access Adobe Export PDF Online
If you specifically need to use your Adobe Export PDF subscription, you can do so directly through a web browser without installing additional desktop software.
Easily Open, View, and Export PDFs with WPS Office
If you are having trouble viewing PDFs on Windows 8.1, WPS Office provides a lightweight, all-in-one solution. It features a built-in PDF reader and editor that lets you view, annotate, and convert PDF documents seamlessly.
- 1. Download and Install: Download WPS Office for free from the official website and install it on your Windows 8.1 computer.
- 2. Open your PDF File: Right-click the PDF file that is not opening, select 'Open with', and choose 'WPS Office' from the list of applications.
- 3. Set as Default Viewer: To always use WPS Office for PDFs, check the box that says 'Always use this app to open .pdf files' before clicking OK.
- 4. View and Export: Use the tabs at the top of the WPS PDF interface to read your document, or click 'PDF to Word' to export your file without needing a separate subscription.

Frequently Asked Questions
Why can't Windows 8.1 open PDF files by default?
Windows 8.1 relies on the built-in 'Reader' app to open PDFs out of the box. If this app was removed, corrupted, or not included in your specific installation, the system will not know how to open PDF files until you install a third-party viewer like Adobe Acrobat Reader or WPS Office.
How do I change the default PDF viewer in Windows 8.1?
Right-click any PDF file, hover over 'Open with', and select 'Choose default program'. Click on the application you want to use (such as Adobe Acrobat Reader), check the box that says 'Use this app for all .pdf files', and click OK.
Can I export PDFs to Word without an Adobe Export PDF subscription?
Yes, if you do not want to use or renew your Adobe subscription, you can use alternative software like WPS Office, which includes built-in tools to convert PDF documents into editable Word, Excel, and PowerPoint files.
What should I do if my PDF file is corrupted and still won't open?
If a specific PDF fails to open in multiple viewers while others work fine, the file itself may be corrupted. Try re-downloading the file from its original source or ask the sender to export and email the document again.




